一、教材分析重力是初二物理第八章第四节的内容,也是本章的一个重点内容.重力是一种最常见的力,它在力学学习中有广泛的应用,在对物体进行受力分析时,都必须先研究重力对物体的运动有无影响,因此,重力在力学中处于基础的地 First, the analysis of the teaching material is the content of the fourth chapter of the eighth chapter of the second physical physics, and is also a key content of this chapter. Gravity is a kind of the most common force, it has a wide range of applications in mechanics learning, exerting force on the object When analyzing, we must first study whether gravity has any influence on the movement of the object. Therefore, gravity is the basic ground in mechanics.